Analysis & Design of RCC shear walls in the model using ETABS

The etabs file for a G+6 building is provided. Run the analysis and design the RCC shear walls (show in the etabs model). The following challenge deals specifically with the shear wall of size 300x1500 at grid A-11 in the structural model.

• Extract values of longitudinal steel ratio, boundary element length and shear reinforcing ratio from the design results.
• Provide cross sectional steel arrangement of the shear wall from its base up to terrace, in compliance with provisions of IS 13920 – 2016. AutoCAD application can be used for this exercise. Alternatively, it can be drawn by hand as well.
• Provide elevation drawings of the reinforcement details of the shear wall from base up to terrace.

AIM:

From etabs file of G+6 building run the analyses and for shear wall of size 300x1500 at grid A-11 in the structural model following need to be obtained:

• To Extract values of longitudinal steel ratio, boundary element length and shear reinforcing ratio from the design results.
• To Provide cross sectional steel arrangement of the shear wall from its base up to terrace, in compliance with provisions of IS 13920 2016.
• To Provide elevation drawings of the reinforcement details of the shear wall from base up to terrace using AutoCAD.

INTRODUCTION:

• Shear wall is a vertical element of a system that is designed to resist in-plane lateral forces, typically wind and seismic loads.
• The assumption are applicable only if shear wall act as vertical cantilever under seismic loads.
• According to IS-13920,shear walls are classified into 3 types-Squate shear wall(H/L<1), Intermediate shear wall(1<(H/L)<2),slender shear wall(H/L>2).
• Location of shear wall places a critical role, it's best to be placed at periphery of the building when the storey is open.

PROCEDURE:

• Open the etabs file and display only shear wall for better visibility of result.
• Run the analysis.
• Go to Shear wall design and click view rewise tgen check the codes and reinforcement details.

• set the elevation view on 11 as shown.
• Select display info and choose P-M failure.

Longitudinal Reinforcement:

• Go to concrete design frame.
• click display info and choose longitudinal reinforcing.

Shear Reinforcement:

• Go to concrete design frame.
• click display info and choose longitudinal reinforcing.

Boundary element width:

• Go to concrete design frame.
• click display info and pier edge/boundary zone width.

Design details of shear wall:

Calculations:

Shear wall details:

Base:

Base to first floor:

First floor to Second Floor:

Second Floor to terrace:

Elevation:

RESULT:

• The values of longitudinal steel ratio, boundary element length and shear reinforcing ratio from the design results are extracted.
• Cross sectional steel arrangement of the shear wall from its base up to terrace, in compliance with provisions of IS 13920 – 2016. AutoCAD application can be used for this exercise. Alternatively, it can be drawn by hand as well is provided.
• Elevation drawings of the reinforcement details of the shear wall from base up to terrace is also provided.